Fianna Fáil’s Micheál Martin is set to be elected Taoiseach on Saturday.
It comes as the Green Party have approved joining a coalition with Fine Gael and Fianna Fáil to form the next Government.
The Greens needed a two-thirds majority to pass the Programme for Government. It was passed with 76%.
Fianna Fáil backed the deal 74% to 26%, while Fine Gael's vote was 80% yes to 20% no.
A full sitting of the Dáil will take place on Saturday in Dublin's Convention Centre to elect the Cork South Central deputy to the position.
The location was chosen to ensure all 160 TDs can attend while adhering to social distancing guidelines.
Micheál Martin will follow in the footsteps of Jack Lynch as Cork’s second Taoiseach.
A cabinet is also expected to be formed which is expected to feature both Cork South Central TDs Michael McGrath and Simon Coveney.